Building-block.



C. BECKER.

BUILDING BLOCK.

ICATION FILED 2 APP ,19l5- 1,186,537, PatentedJune13,1916.

Z 4 a I 9;) I v z %%///W/ fl Wm W CHARLES BECKER, 0F MILWAUKEE, WISCONSIN.

BUILDING-BLOCK.

Specification of Letters Patent.

Patented Jane 13, was.

Application filed July 26, 1915. Serial N 0. 41,853.

To all-whom it may concern:

Be it known that 1, CHARLES BECKER, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of 'VVisconsin, have invented certain new and useful Improvements in Building- -Blocks; and I do hereby declare that the following is a full, clear. and exact description thereof.

This invention relates to the subject of building blocks, and has for its main object the production of building blocks having their upper and lower surfaces provided with alternating grooves and" projections which are so disposed that when the blocks Figure 1 is a plan view of a portion of a wall formed of blocks made in accordance with this invention. Fig. 2 is a sectional view taken on the line 2-2, Fig. 1, an additional brick being shown on top of the bricks shown in Fig. 1 to illustrate the interlocking engagement at-the corner.

The improved building blocks forming the subject-matter of this application may be formed of any suitable material and shaped in accordance with the type of wall or other structure they are to be used in forming, the essential feature of the blocks being that their upper and lower surfaces be of such a nature that when the blocks are superimposed, they will have a firm interlocking engagement that will prevent the blocks relatively slipping in any direction.

Two forms of the improved blocks have been shown in the accompanying drawing, the blocks designated'by the character A being primarily intended for use in connection with straight work, and the blocks designated by the character B being intended for use in connection with angular work, such as corners and the like.

The blocks A have their upper and lower surfaces provided with alternating projections 1 and grooves 2, the grooves and projections being of a substantially Vshape with their apexes at the longitudinal center of the blocks. and said grooves and projections are preferably rounded. The V-shape shown is preferred as such causes the blocks to have a firm interlocking engagement when superimposed that will effectively ,prevent relative slippage of the blocks either longitudinally or laterally.

The blocks B have theirupper and lower surfaces provided with grooves and projections of the same character as those formed on the blocks A, but said grooves and projections of blocks B are arranged in two sets .on' each surface of the blocks, the set of grooves and projections designated generally by the character 3 being, arranged so that their apexes extend transversely of the blocks, and the set of grooves and projections designated generally by the character 4: being arranged so that their apexes extend longitudinally of the blocks. The blocks B,

as aforesaid, being primarily intended for angular work, such as corners, it will be seen that when assembled in connection with the blocks A, the sets of grooves and projections 3 form a continuation of and interlock with the grooves and projections of saidblocks A,

and'the sets of grooves and projections 4 are in position to interlock with other blocks A that are disposed at right angles to the first mentioned blocks A.

Figs. 1 and 2 of the drawings illustrate the relative arrangement of the blocks A and B when in practical use, and by referring to said figures it will be seen that the blocks in their straight courses and in their angular courses have a firm interlocking engagement. ()bviously such engagement may be made a permanent one by the use of mortar or other binding materia i I claim as my invention 1. A building block having its top and bottom surfaces each provided with regularly spaced alternating grooves and projections, that are V-shaped in plan and V- shaped in cross section with their respective sides mutually merged together and having their apexes alined at the center of the said surface.

2. A building block havingits top and bottom surfaces provided with alternating, regularly spaced grooves and projections that are V-shaped in plan with their apexes alined at the centers of the said surfaces,

said grooves and projections being arranged mtwo sets on each surface of the block, one

set having their apexes in a line extending longitudinally of said surface and the other set having their apexes in a line extending transversely of said surface.

in meeting edges of the sets forming a third set V-shaped grooves on one side of the longitudinal centers of the-surfaces.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in

the county of Milwaukeeand State of Wis- 15 consin, in the presence of two Witnesses.

CHARLES BECKER.

Witnesses v ADoLPH JENNERJOHN, CHARLES H. Srno'riurnrnn. 

